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CVE-2020-17383

25
FAUCET Score

CVE-2020-17383 is a critical directory traversal vulnerability affecting Telos Z/IP One devices running firmware versions up to 4.0.0r. This flaw allows an unauthenticated attacker to gain root-level access to the device's file system. The vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability, enabling the exfiltration of sensitive data like configuration settings and cleartext passwords. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0.0rCPE matchmatch criteria
cpe:2.3:o:telosalliance:z\/ip_one_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.25%
Probability of exploitation in next 30 days
EPSS Percentile
90.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0425 is in the 83rd percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

sra.io / blog-post
Broken Link
sra.io / blog/this-traversal-had-a-face-for-radio-cve-2020-17383
ExploitPatchThird Party Advisory
telosalliance.com / downloads
Vendor Advisory